Revolving firearm.



vPAJITBNTBD NOV. 1o, 1903.

J. H. WESSON. RBVOLVING FIREARM.

APPLIGATION FILED MAR. 27, 1903.

N0 MODEL..

Unirse Sterns Patented November 10, 1903.

JOSEPH H. WESSON, OF SPRINGFIELD, MASSACHUSETTS.

REVOLViNG FlREARNl.

SPECIFICATION :forming part of Letters Eatent No. 743,784, dated November 10, 1903.

Application filed March 27,1903.

To all whom, it may concern:

Be it known that l, JOSEPH H. Wasson, a citizen of the United States of America, residing at Springfield, in the county of Hampden and State of Massachusetts, have invented new and usefullmprovements in Revolvers, of which the following is a specification.

' This invention relates to improvements in revolvers, and the object thereof is to provide improved means for securing the cylinder in firing position in the frame in such manner that the chambers of the -cylinder when in this position will register accurately with the issued to Daniel l5. Vesson on December 17,

1901, numbered 680,260, in which patent there is associated with the locking devices a thumb-actuated member located on the side of the frame back of the recoil-plate, whereby said locking devices are operated. In this invention the construction has been vso simplied as to do away with this thumb-actuated member.

Referring to the drawings forming part of lthis application, Figure l illustrates a side elevation of a revolver with certaiuparts thereof broken away, showing the application of this invention thereto. Fig. 2 is a side elevatiorrof a part of the barrel and a portion of the ejector-stem and lockingr means lier the latter.

Referring to the drawings, the frame of the, armis indicated by a, the barrel by b, and the cylinder by' c. The lal er is mounted on a yoke il, which is pivot Sy supported in the frame und er the cylind in the well-known manner a ,il one which common to most solid-fra,` `revolvers, th .7 portion of the yoke on which t.

; cylinder turnsbeing indicated Serial No. 149,899. (No model.)

by e. This is clearly shown in section in Fig. 1.

The ejector-stem, which is indicated by j", is tubular, and there is located axially therein a locking-pin g, Which is of a length equal to the length of the ejector-stem. The latter is spring-held in that member ofthe cylinderyoke on which it is mounted in the usual manner.

The locking-pin f/ is provided with a collar h, `whereby a shoulder is formed for one end of a spiral spring t, whose opposite end bears against a bushingj, which is screwed'into the end of the extractor, all as shown in Fig. 1. The' action of the spring i normally will hold the collar h to a seat in the bottom of the perforation in the extractor-stem which receives this pin.

Located under the barrel is a boss lo, having a perforation therethrough in line with the pin g. In this boss there is mounted a short bolt m, provided with a spring u, which tends to force the bolt against the end of the pin g. One end of the bolt extends through the forward end of the boss 7c, and a knob or button -o is secured thereon, whereby the bolt may be operated and its movement limited. Thus norxnallythe bolt m is by'its spring forced outwardly of the boss l: toward the cylinder, and thus will enter the end of the extractorstem and displacing the locking-pin g force the latter rears'vardly and into a holo in the recoil-plate adapted to receive it, the bolt entering the forward end of the stem f, thus locking it to the barrel.

To release the cylinder, the knob o is grasped and the bolt m withdrawn from the end of the extractor-stein, whereupon the spring t' will force the pin y toward the muzzle of the arm, thus releasing the rear end of the cylinder, whereupon the latter may be swung out of the frame.

The herein-described construction thus provides for locking the cylinder in a manner quite as effective as in the said Letters Patent above referred to; but the construction as'awhole is very much cheaper than that described in said patent. l

Having thus described my invention, what I claim, and desire to secure by Letters Patent 'of the United States, is

l. ln a revolver, in combination, a sideswngmg eylmder, eu eXrecter--eem extending therethrough, e ongtudiney m0eee pin in *me etfaer w eegege with the in the rear end theylinder; e heb; barrel in exeeinement with seid piu, end means of engagement between seid bolt arid the emi of l:,he extreem)weten];Y :L spring on said bolt 1;'0 move the latter toward said 'pin and te force the atter into enge-gement Wnh the frame, and e spring on the pin to retreat the letter when the belt is retracted.

2. in e "aevolver, in eombinatome sideswingng cylinder, an extractor-stem. extend- 'iug' therethrough, 2, longitudinally-movable pin in the letter o engage with the frame at the rem' end of the eylnde'; a bees on 'che 'Lnder sfe or ne bm'xe, ebol, located rimer-en in axial Valnemed; with seid pin, m merma of engegemens between gaie eet and, aile end of the extractor-stem, one end 9 said boluextending through seid hoes toward the muzzle of Vthe barrel; a. spring on eat bolt no move the latter toward said pin-and x50 v movelle latter into locking engagement with the frame, and a sping on the pi "so retract the letter when the bos ie retreced.

` JOSEPH H. "WESS@N Vitnesees:

W M. H.' CHAPIN, K. l. 'GLEMONS- Y 

